AZBio  Board of Directors

Nathan Trembath

General Manager| Phoenix, Arizona

ROIS CDMO

Nathan serves as the general manager of the ROIS CDMO manufacturing facility in Phoenix. In his role, Nathan is responsible for leading all operations, functions and performance of the 280,000 square foot facilitythat delievers key fill-finish capacity for antibody drug conjugates (ADCs) along with cytotoxic fill-finish and lyophilization.

As a leader with over 20 years of experience in global pharmaceutical and medical device laboratory, quality and operations, Nathan’s diverse expertise includes non-sterile, aseptic and terminal sterilization; vaccine and biologics and device manufacturing. He has led complex manufacturing operational turnarounds and operations excellence deployment. Nathan brings outside-of-the-thinking, technical acumen and high-accountability execution to develop a highly skilled and engaged workforce committed to safety and quality.

Prior to joining ROIS, Nathan led the Bristol Myers Squibb facility in Phoenix that was acquired by ROIS.

Prior to BMS, Nathan oversaw best practices architecture for Quality, Manufacturing and Technical Operations at Merck where he led the adoption of industry 4.0 mindsets for strategic manufacturing facilities expansions in a $7B capital portfolio. His career spans leadership roles for Smith & Nephew, Pfizer and GlaxoSmithKline in the U.S., Italy and Australia.

Nathan grew up in Australia and received bachelor’s degrees in biochemistry and chemistry from the Swinburne University of Technology in Melbourne.

About ROIS CDMO
ROIS is a global CDMO built on nearly 80 years of pharmaceutical manufacturing excellence under ROVI; the contract manufacturing arm was rebranded as ROIS in 2025 with the addition of its US network. ROVI is a third-generation family-led company founded in 1946 and a leading pharmaceutical company in Spain, with its financial strength supported investment in ROIS.